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Finding the Fourth Proportional to 664,789.25, 917,411.60 and 362,983.25

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Solution

The fourth proportional to 664,789.25, 917,411.60 and 362,983.25 is: 500,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,789.25 : 917,411.60 = 362,983.25 : x
  2. Step 2: Convert to fraction form
    664,789.25/917,411.60 = 362,983.25/x
  3. Step 3: Cross multiply
    664,789.25x = 917,411.60 × 362,983.25
  4. Step 4: Simplify right side
    664,789.25x = 333,005,044,155.70
  5. Step 5: Solve for x
    x = 333,005,044,155.70/664,789.25
  6. Step 6: Final answer
    x = 500,918.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.